according to personal finance experts, you could save around $1,000 a year if you brew your own coffee or brown bag it. >> you think about the taxes that you have to pay and your regular just day-to-day living expenses like your pg&e bill and your cell phone bill and all of that the $90 an hour really gets eaten away quickly. >> reporter: which brings us to tip 2. save, save, save. according to the united states federal reserve, americans on average only save 3.6% of their income. what we should be saving upwards of 10%. and if you are counting on social security, plan on socking away 12 times your current income too. because getting old can get expensive. >> i have seen clients pay upwards of $13,000 a month for round the clock care in their homes. it's very expensive. >> reporter: and then there's housing. bringing us to tip number 3. you shouldn't spend more than 25 percent of your income on where you live. a tall order here in the bay area. but keeping this rule of thumb in mind might help you stash some cash into your 401(k) or ira. >> cheers! >> reporter: this couple rents two bedrooms of